In the intricate world of chemical manufacturing, specific intermediates are foundational to creating high-value products. 1-Naphthylamine-7-sulfonic acid, with its CAS number 119-28-8, is a prime example of such an essential chemical. This compound is particularly critical for the dyestuff industry, serving as a versatile intermediate in the synthesis of a broad spectrum of colors that are vital for textiles, paper, and other materials.

Understanding the Chemical Identity and Properties

1-Naphthylamine-7-sulfonic acid is an aromatic organic compound derived from naphthalene. Its chemical structure, featuring an amine group and a sulfonic acid group attached to the naphthalene ring, imparts specific reactivity that is highly desirable in dye synthesis. Typically presented as a light gray crystalline powder, it boasts excellent thermal stability, with a melting point often reported as ≥300°C. This robustness is crucial for surviving the demanding conditions of chemical synthesis processes. As a supplier, we ensure that the purity of our 1-Naphthylamine-7-sulfonic acid is maintained at high levels, usually 98% or greater, guaranteeing optimal performance in downstream applications.

Crucial Role as a Dye Intermediate

The primary function of 1-Naphthylamine-7-sulfonic acid is its use as a key intermediate in the production of various dyes. Its chemical structure allows it to participate in diazotization and coupling reactions, which are fundamental to creating colored azo dyes. Specifically, it is used in the manufacturing of:

  • Direct Dyes: It is a critical precursor for dyes like Direct Light Fast Blue B2RL and Direct Light Fast Red Brown RTL. These dyes are extensively used for dyeing cotton, rayon, and other cellulosic fibers due to their ease of application and good lightfastness.
  • Sulfur Dyes: The compound is also integral to the synthesis of sulfur dyes, such as Sulfur Blue CV. Sulfur dyes are economical and provide good wash fastness, making them popular for workwear and denim.
  • Other Specialty Dyes: Its versatility allows for its incorporation into a range of other dye types, contributing to diverse color palettes and performance properties required by various industries.

Why Buy from a Trusted Manufacturer?

For R&D scientists, formulators, and procurement managers, securing a reliable source for 1-Naphthylamine-7-sulfonic acid is paramount. As a dedicated manufacturer and supplier, we focus on delivering:

  • Consistent Quality: Our production processes are designed to ensure high purity and batch-to-batch consistency, which is vital for predictable results in dye synthesis.
  • Competitive Pricing: By optimizing our manufacturing and supply chain, we can offer competitive pricing for 1-Naphthylamine-7-sulfonic acid, allowing our clients to manage costs effectively.
  • Supply Chain Stability: We understand the importance of uninterrupted supply. Our robust manufacturing capacity ensures that you can buy the quantities you need, when you need them.

When you are looking to buy 1-Naphthylamine-7-sulfonic acid, consider partnering with a manufacturer committed to quality and reliability. This intermediate is a cornerstone of modern dyestuff chemistry, and a dependable supply chain is essential for your success.